My Telemaster 40 was a bit under powered with a 40 sized engine. I would be good choice for someone just learning as it is just enough power to get it off of the ground and back. You do have to watch the climb rate or can approach a stall. On this plane that isn't much of a problem unless you have just lifted off as it will recover in about 20 ft altitude loss. I think a .46 would have been a better choice as I carried around a bunch of lead in the nose for proper balance anyway. I enjoyed mine as my first powered plane. Unfortunatly it was lost due to a 60 size pattern plane striking mine just under the wing while I was on approach for a landing. Being a light airplane and low I lost only the balsa. The radio and engine were fine. Looking for another plane as a Christmas present!!!! Happy flying Art.